/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package me.nereo.multi_image_selector.view.gestures;

/**
 *
 */
public interface OnGestureListener {
    /**
     *
     * @param dx x
     * @param dy y
     */
    public void onDrag(float dx, float dy);

    /**
     *
     * @param startX start x
     * @param startY start y
     * @param velocityX velocity x
     * @param velocityY velocity y
     */
    public void onFling(float startX, float startY, float velocityX,
                        float velocityY);

    /**
     *
     * @param scaleFactor scale
     * @param focusX x
     * @param focusY y
     */
    public void onScale(float scaleFactor, float focusX, float focusY);

}